OEM Carrier 2-Pole Contactor 40 Amp 24V Coil — HN52KD020 for Model PH12NA060000AGAA

This is the genuine OEM factory-authorized contactor for the Carrier PH12NA060000AGAA heat pump system. The contactor is a high-voltage relay that switches power to the compressor and condenser fan motor whenever the thermostat calls for cooling or heating. When the contactor fails, the most common symptom is the outdoor unit failing to energize entirely — you'll hear the indoor air handler running while the outdoor unit stays silent, or the system may short-cycle and trip the breaker. Pitted, burned, or stuck contacts are the leading cause of compressor burnout, making timely replacement critical.

• Specs: 2-Pole | 40 Amp load rating (50A resistive) | 24V AC coil | Replaces OEM P/N HN52KD020, HN52KD025, HN52KD025A, 3100-30Q1028TT
• OEM vs Generic: This is a genuine Factory Authorized Carrier part — engineered to exact contact gap, coil pull-in voltage, and arc suppression specs. Aftermarket contactors often use inferior contact alloys that pit faster and fail earlier, risking compressor damage.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, camera or phone to photo wiring. Transfer one wire at a time to avoid miswiring. Coil wires are low-voltage (24V); line and load terminals are high-voltage — exercise caution.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PH12NA060000AGAA heat pump. Always verify pole count, amperage, and coil voltage against your unit's data plate before ordering. Cross-references include HN52KD025 and HN52KD025A for legacy stock. Our team is available to confirm fitment before you buy — just reach out!